* - AVK India

Ductile iron body, EN1092 flange, EPDM rubber, A2 bolts, 250µm blue EP (WRAS) coating

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AVK Valves India Pvt Ltd

117 & 118, 1st Floor, Road Number 3 Vijayanagar, EPIP Phase I, Whitefield, Bengaluru, Karnataka 560066, India

Resilient seated gate valve to BS5163 ring key and bar operation, for water and other neutral liquids, including treated waste water free of solids and fibrous impurities to max. 70°C

AVK series 21 gate valves are designed to BS 5163 and come with built-in safety in every detail. The wedge is fully vulcanized with AVK’s own drinking water approved EPDM rubber compound. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The triple safety stem sealing system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability.

Variant 21/45-008
Connection:	Flanged
Material:	Ductile iron
DN:	DN50 - DN400
PN:	PN 16
Closing direction:	Clockwise to Close

Features

Wedge nut in dezincification resistant brass, designed as a fixed, integral part of the wedge which prevents vibration and ensures durability
Full circle thrust collar keeps the stem firmly lined up and ensures low operating torque
Wedge core fully vulcanized with drinking water approved EPDM rubber in a process that eliminates creeping corrosion underneath the rubber
Triple safety stem seal with an NBR wiper ring outermost to protect against contamination from outside, in the middle two O-rings around the replaceable radial bearing, and innermost an O-ring is the main seal to the system pressure
Wedge shoes in PA and guide rails on the body make the wedge slide easily up and down regardless of differential pressure
Stem in stainless steel with wedge stop and rolled threads for high strength
Bonnet gasket in EPDM with a circular cross-section, fixed in a recess to avoid blow-out
Counterbored stainless steel, A2 bonnet bolts, sealed with hot-melt and encircled by the bonnet gasket
250µm blue epoxy (WRAS) coating
A large conical stem hole going all the way through the wedge ensures circulation and prevents stagnant water

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Datasheet

Appendix

Installation, operation and maintenance manuals

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Reference no.	DN mm	Flange drilling	L mm	W mm	H mm	H3 mm	F1 mm	F2 mm	Theoretical weight/kg
21-050-45-01420CC	50	PN10/16	178	165	269	351	15	30	13
21-065-45-01420CC	65	PN10/16	190	185	269	362	15	30	15
21-080-45-01420CC	80	PN10/16	203	200	277	377	15	30	16
21-100-45-01420CC	100	PN10/16	229	220	300	410	18	36	18
21-150-45-01420CC	150	PN10/16	267	285	390	533	18	36	33
21-200-45-00420CC	200	PN10	292	340	483	653	22	42	51
21-200-45-01420CC	200	PN16	292	340	483	653	22	42	51
21-250-45-00420CC	250	PN10	330	400	582	782	27	48	83
21-250-45-01420CC	250	PN16	330	400	582	782	27	48	83
21-300-45-00420CC	300	PN10	356	455	665	893	25	48	115
21-300-45-01420CC	300	PN16	356	455	665	893	25	48	115
21-350-45-00420CC	350	PN10	381	505	821	1073	25	48	176
21-350-45-01420CC	350	PN16	381	533	821	1088	25	48	209
21-400-45-00420CC	400	PN10	406	565	848	1130	31	48	186
21-400-45-01420CC	400	PN16	406	580	848	1138	31	48	215

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Components

1.	Body	Ductile iron EN-GJS-500-7
2.	Wedge rubber	EPDM rubber
3.	Wedge core	Ductile iron EN-GJS-500-7
4.	Wedge shoe	Polyamide
5.	Wedge nut	Brass DZR CW602N
6.	Stem	Stainless steel 1.4021 (AISI 420)
7.	Bonnet gasket	EPDM rubber
8.	Bonnet	Ductile iron EN-GJS-500-7
9.	O-ring	EPDM rubber
10.	Bolt	Stainless steel A2
11.	Cover	Hot melt glue
12.	Wiper ring	NBR rubber
13.	Bonnet cover	Ductile iron EN-GJS-500-7
14.	Bearing shell	Polyamide
15.	O-ring	EPDM rubber
16.	Thrust collar	Brass
17.	O-ring	EPDM rubber
18.	Bolt	Stainless steel A2

Test/Approvals

Seat: 1.1×PN (in bar), Body: 1.5×PN (in bar).
WRAS approved materials

Standards

EN 1074 part 1 & 2
Face-to-face dimension according to EN 558, basic series 3
Flange drilling to EN1092, PN10/16

GATE VALVE, FLANGED, BS STD., PN10/16